Air Conditioning System (For Manual Air Conditioning System) - How To Proceed With Troubleshooting

Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - HEATING / AIR CONDITIONING


AIR CONDITIONING SYSTEM (for Manual Air Conditioning System) - HOW TO PROCEED WITH TROUBLESHOOTING

  • HINT:
Use these procedures to troubleshoot the air conditioning system.
*: Use the intelligent tester.

1.VEHICLE BROUGHT TO WORKSHOP
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2.INSPECT BATTERY VOLTAGE
  • Standard voltage:
  • 11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

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3.CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

Use the intelligent tester to check if the CAN communication system is functioning normally .

for LHD: .
for RHD: .
Result
ResultProceed to
CAN DTC is not outputA
CAN DTC is output (for LHD)B
CAN DTC is output (for RHD)C
B.
GO TO CAN COMMUNICATION SYSTEM ()
C.
GO TO CAN COMMUNICATION SYSTEM ()
A
4.CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

Use the intelligent tester to check if the LIN communication system is functioning normally ().

Result
ResultProceed to
LIN DTC is not outputA
LIN DTC is outputB
B.
GO TO LIN COMMUNICATION SYSTEM ()
A
5.CHECK FOR DTC*

Check for DTCs ().

Clear the DTCs ().

Based on the DTCs output above, try to force output of the air conditioning system DTC by simulating the conditions indicated by the DTC. Then recheck for DTCs.

Result
ResultProceed to
DTC is not outputA
DTC is outputB
B.
GO TO DIAGNOSTIC TROUBLE CODE CHART ()
A
6.PROBLEM SYMPTOMS TABLE

Refer to the Problem Symptoms Table ().

Result
ResultProceed to
Fault is not listed in problem symptoms tableA
Fault is listed in problem symptoms tableB
B.
ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
A
7.OVERALL ANALYSIS AND TROUBLESHOOTING*

Terminals of ECU ()

Data List/Active Test ()

On-vehicle Inspection

Inspection

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8.ADJUST, REPAIR OR REPLACE
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9.CONFIRMATION TEST
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END